the front side of Mana Reflection
the back of a classic MtG card
the front side of Karametra's Favor
the back of a classic MtG card
the front side of Horseshoe Crab
the back of a classic MtG card

Color Identity: G, U

Initial Card State

  1.  All permanents on the battlefield.

Easy Prerequisites

  1. Horseshoe Crab doesn't have summoning sickness.
  2. Karametra's Favor is attached to Horseshoe Crab.

Steps

  1. Activate Horseshoe Crab by tapping it, adding one blue manaone blue mana due to Mana Reflection.
  2. Activate Horseshoe Crab by paying one blue mana, untapping it.
  3. Repeat.

Results

  1. Infinite colored mana.

Variants of this combo

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